Accession year
- 1901 to 190987,395 objects
- 1910 to 191911,466 objects
- 1920 to 192925,357 objects
- 1930 to 193946,609 objects
- 1940 to 1949136,925 objects
- 1950 to 1959150,058 objects
- 1960 to 196993,216 objects
- 1970 to 197942,706 objects
- 1980 to 198917,099 objects
- 1990 to 1993480 objects